DMA — direct memory access — A channel that allows certain types of data transfer between RAM and a device to bypass the processor.
docking device — See APR.
DMTF — Distributed Management Task Force — A consortium of hardware and software companies who develop management standards for distributed desktop, network, enterprise, and Internet environments.
domain — A group of computers, programs, and devices on a network that are administered as a unit with common rules and procedures for use by a specific group of users. A user logs on to the domain to gain access to the resources.
DRAM — dynamic
driver — Software that allows the operating system to control a device such as a printer. Many devices do not work properly if the correct driver is not installed in the computer.
DSL — Digital Subscriber Line — A technology that provides a constant,
dual display mode — A display setting that allows you to use a second monitor as an extension of your display. Also referred to as extended display mode.
DVD+RW — DVD rewritable — A rewritable version of a DVD. Data can be written to a DVD+RW disc, and then erased and written over (rewritten). (DVD+RW technology is different from
DVD+RW drive — drive that can read DVDs and most CD media and write to DVD+RW (rewritable DVDs) discs.
DVI — digital video interface — A standard for digital transmission between a computer and a digital video display.
E
ECC — error checking and correction — A type of memory that includes special circuitry for testing the accuracy of data as it passes in and out of memory.
ECP — extended capabilities port — A parallel connector design that provides improved bidirectional data transmission. Similar to EPP, ECP uses direct memory access to transfer data and often improves performance.
EIDE — enhanced integrated device electronics — An improved version of the IDE interface for hard drives and CD drives.
EMI — electromagnetic interference — Electrical interference caused by electromagnetic radiation.
ENERGY STAR® — Environmental Protection Agency requirements that decrease the overall consumption of electricity.
EPP — enhanced parallel port — A parallel connector design that provides bidirectional data transmission.
ESD — electrostatic discharge — A rapid discharge of static electricity. ESD can damage integrated circuits found in computer and communications equipment.
expansion card — A circuit board that installs in an expansion slot on the system board in some computers, expanding the capabilities of the computer. Examples include video, modem, and sound cards.
expansion slot — A connector on the system board (in some computers) where you insert an expansion card, connecting it to the system bus.
ExpressCard — A removable I/O card adhering to the PCMCIA standard. Modems and network adapters are common types of ExpressCards. ExpressCards support both the PCI Express and USB 2.0 standard.
Express Service Code — A numeric code located on a sticker on your Dell™ computer. Use the Express Service Code when contacting Dell for assistance. Express Service Code service may not be available in some countries.
extended display mode — A display setting that allows you to use a second monitor as an extension of your display. Also referred to as dual display mode.
